Laserfiche WebLink
L DRAFT / Mr. Chuck Trujillo <br /> December S,2003 <br /> with vacuum trucks. As soon as it was safe and feasible, CPL crews vacuumed oil directly from <br /> the rupture,instead of via the trench and pit. <br /> POTENTIAL ENVIRONMENTAL ISSUES AND INTERIM RESPONSES <br /> Based on initial observations, Cambria has identified the following potential conditions. <br /> Cambria's proposed interim responses follow each issue. <br /> Issue No. 1 <br /> Soil Adjacent to Rupture Points: Soil adjacent to and beneath the pipeline rupture points has <br /> been impacted by crude oil. In addition, containment of the flowing crude oil required excavation <br /> of a trench and receiving pit. This area requires immediate response due to the risk of further <br /> crude oil migration and impact. <br /> Planned Response: Crude oil is being removed as feasible with a vacuum truck. Vehicle access <br /> is limited by wet soils and tilled farmland. Excavation adjacent to the rupture can not be <br /> immediately performed because pipeline repair crews are making repairs to the line, and <br /> excavation would result in increased volatilization of lighter petroleum hydrocarbons in crude oil, <br /> increasing the risk of explosion. Once the line has been repaired, obviously impacted soils will be <br /> excavated and stockpiled onsite under direction of a trained field geologist using a portable <br /> photoionization detector. Cambria's health and safety plan for the field geologist is included as <br /> Attachment A. In addition, crude oil impacted soils in the containment pit will be excavated and <br /> confirmation samples will be collected following Cambria's standard field procedures <br /> (Attachment B).Four samples will be collected from the receiving pit bottom and one sample will <br /> be collected from each sidewall. <br /> Issue No. 2 <br /> Ploughed Areas Northeast and Northwest of Primary Rupture Point: Crude oil flowed from <br /> the pipeline onto tilled ground surface. To the northeast, oil flowed through rills and through tire <br /> tracks left by the farmer's tractor. To the northwest,parallel to the CTPC right-of-way,oil flowed <br /> through tire tracts left by the farmer's tractor.To contain flowing crude, CTPC constructed berms <br /> around the flowing oil. Ground surface soils consist of silty sands, and surface soils were wet <br /> from rainfall at the time of the rupture. An approximately several thousand sq ft area appears to <br /> be impacted at this time. This area requires immediate response due to the risk of further liquid <br /> crude oil migration and impact. <br /> 2 <br />